package com.gdut.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.gdut.common.constant.AuthServerConstant;
import com.gdut.common.exception.BizCodeEnum;
import com.gdut.common.utils.R;
import com.gdut.common.vo.MemberRespVo;
import com.gdut.gulimall.auth.feign.MemberFeignService;
import com.gdut.gulimall.auth.feign.ThirdPartFeignService;
import com.gdut.gulimall.auth.vo.UserLoginVo;
import com.gdut.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @author Drifiter
 * @create 2021-10-10 22:58
 */
@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;


    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("mobile") String mobile) {

        // ToDo 1、接口防刷。
        String redisCode =  redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + mobile);
        if (!StringUtils.isEmpty(redisCode)) {
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - l < 60000) {
                // 60s内不能再发
                return R.error(BizCodeEnum.SMS_CODE_EXCEPTIO.getCode(), BizCodeEnum.SMS_CODE_EXCEPTIO.getMsg());
            }

        }

        //2、验证码的再次校验。redis。存key-phone，value-code  sms:code:15767771601 ->1234
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code + "_" + System.currentTimeMillis();
        //redis缓存验证码
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX + mobile, substring, 10, TimeUnit.MINUTES);

        thirdPartFeignService.sendCode(mobile, code);
        return R.ok();
    }


    /**
     * // ToDo 重定向携带数据，利用session原理。将数据放在session中。只要跳到下一个页面取出这个数据以后,session里面的数据就会删掉
     * //ToDo 1、分布式下的session问题。
     *
     * @param vo
     * @param result
     * @param redirectAttributes 模拟重定向携带数据
     * @return
     */
    @PostMapping("regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         RedirectAttributes redirectAttributes, HttpSession session) {

        if (result.hasErrors()) {

            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
//            model.addAttribute("errors",errors);
            redirectAttributes.addFlashAttribute("errors", errors);


            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";


        }

        // 真正注册。调用远程服务进行注册
        // 1、校验验证码
        String code = vo.getCode();
        String s =  redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)) {
            if (code.equals(s.split("_")[0])) {
                //删除验证码;令牌机制
//                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过。//真正注册。调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0){
                    return "redirect:http://auth.gulimall.com/login.html";
                } else {
                    HashMap<String, String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            } else {
                HashMap<String, String> errors = new HashMap<>();
                errors.put("code", "验证码错误");
                redirectAttributes.addFlashAttribute("errors", errors);
                //校验出错，转发到注册页
                return "redirect:http://auth.gulimall.com/reg.html";

            }

        } else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("code", "验证码错误");
            redirectAttributes.addFlashAttribute("errors", errors);
            //校验出错，转发到注册页
            return "redirect:http://auth.gulimall.com/reg.html";

        }


//        //注册成功回到首页，回到登录页
//        return "redirect:/login.html";
    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){


        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null){
            return "login";
        } else {
            return "redirect:http://gulimall.com";
        }
    }



    // gitee:     Client ID: 33063cd81b1682d47ab6c487db12c32548700d100155b7f3e340bb2e497d9ee0
//    Client Secret: 6c14a5d4475d0409aeb2eaf6344600ddc7ea8476cfb26efd26219835b2c9f9ee

    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes,HttpSession session){

        //远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode()==0){
            MemberRespVo data = login.getData(new TypeReference<MemberRespVo>() {
            });
            // 成功放到session中
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);

            return "redirect:http://gulimall.com";
        } else {
            HashMap<String, String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }

    }


}
